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No. rs1-4,2m. Patentedmv. l5, |898. w. H. sLocuM. TYPE WRITING MACHINE. (Application'mea Aug. 1s, 1897.). (No Model.) 2 Sheets-.Sheet l.'

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VMM-Iven! I U Q f V. v Q www Q v u v w uw THE NORRIS PETERS CO.. PHOYO-LITNO, WASHINGTON, D. C.

& MHIIIIIE Patented Nov. I5, 189B. W. H. SLOCUM.

TYPE WRITING MACHINE.

(Appliwion md Aug. 13, 1897.)

2 Sheets-Sheet 2.

I/l /I /I /l ll /l ll Il l UNITED STATES PATENT OFFICE.

WILLIAM I-I. SLOCUM, OF BUFFALO, NEW YORK, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO PERCY EATON AND MARGARET M.

SLOCUM, OF SAME PLACE.

TYPE-WRITING MACHINE. v

SPECIFICATION forming part of Letters PatentNo. 614,216, dated November 15, 1898.

Application ned August 13, 1897.

To @ZZ whom t may concern:

Be it known that I, WILLIAM H. SLooUM, a citizen of the United States, residing at Buff falo, in the county of Erie and State of New York, have invented a new and useful Improvement in Type Writing Machines, of which the following is a specification.

This invention relates to that class of typewriting machines in which the typeare mounted on a pivoted segment vand the paper is pressed against the type by a hammer.

The object of my invention is the production of a type-writing machine of this character which is extremely simple and durable in construction and reliable in operation and which can be constructed at comparatively small cost.

In the accompanying drawings, consisting of two sheets, -Figure l is afragmentary vertical longitudinal section of my improved type-writing machine. Fig. .2 is a fragmentary top plan View of the same. Fig. 3 is a horizontal section in line 3 3,1Fig. ll. Fig. et is a fragmentary vertical longitudinal section showing a modified construction of the impression device.

Like letters of reference refer to like parts in the several Iigures.

A represents the main frame of the machine, which may be of any suitable construction and which consists, essentially, of an open base a, two standards a a', arranged on opposite sides of the base, and two transverse supporting-bars a2 a3, connecting the upper ends of the standards.

B represents the transversely-movable paper-carriage, which may be constructed and operated in any wellknown and suitable manner. As shown in the drawings, this carriage consists, essentially, of a transverse plate b, arranged above the cross-bars a2 a3, and a number of paper-holding guide-arms b' b', which are secured to the rear edge of the plate and extend downwardly, rearwardly, and upwardly in a scroll. The carriage is movably supported by means of lower rollers c c, pivoted on the cross-bars a2 a3 and engaging with grooves in the under side of the plate b. The carriage is heldin place on Serial No. 648,099. (No model.)

the lower rollers c c by means of upper roll- 5o ers c c', which engage with a groove formed in the upper side of the carriage-plate along its front edge and which 'are pivoted in brackets c2, formed on the front cross-bar a2 and overhanging the carriage-plate.

D D represent front and rear paper-feed rollers which are arranged above and on opposite sides of the throat or space formed between'the front and rear ends of the scrollguide arms. The front feed-roller is journaled with its ends in bearings d, arranged on the carriage-plate, and a rear feed-roller is journaled in bearings d', arranged on the free ends of the outermost paper-guide arms b. The paper is placed in the guide-arms and betweenv the feed-rollers and is .fed upwardly by the latter past the printing devlees.

E represents the horizontally swinging type-carrier or printing-segment, which is ar ranged with its type-face above the front feed-roller and in front of the path of the paper. This segment is secured with its front portion to the upper end of a vertical rockshaft e, journaled with its lower end in a bearing e', which is formedl in a cross-bar c2 of the lnain frame and with its upper end in a bearing e3, formed in a bracket e4, which rises from the front supporting-bar a2. Upon turning the rock-shaft the different type on the face of the printing-wheel may be brought to the printing-point of the paper.

F represents the ink-ribbon, which is directed by guides ff between the face of the type-segment'and the sheet of paper and ,which is Wound with its ends upon spools ff,

of the printing-segment on the paper the inkribbon is shifted slightly from one spool to the other by any suitable mechanism.

The mechanism whereby the type-segment is turned so as to present the different type on its face to the printing-pointis constructed as follows:

G G' represent two horizontal shifting bars or arms, which are secured with their inner ends to the central portion of the rock-shaft e and project radially from diamctrically opposite sides thereof.

I-I represents the key-levers, whereby the type-segment is turned and which are arranged lengthwise in the frame. The rear portions of the keys are close together and arranged in two groups on opposite sides of the printing-segment shaft below the shifting arms G G', while the front portions of the keys are separated and pivoted to a cross-rod h, which is secured to lugs 7L' 7L' on the base of the frame. The key-levers are normally held with their front arms in an elevated position and their rear arms in a depressed position by means of springs h2, connecting the rear arms with a cross-bar h3, secured to the base. Each of the key-levers is formed out of sheet metal and is arranged with its side in a vertical plane. The upper edge of the rear arm of each key-leveris provided below the adjacent shifting arm with a notch or seat t' and front and rear inclines 'i' i2, extending from the upper portion of the lever downwardly to opposite sides of said recess. Upon depressing the front arm of a key-lever its rear arm rises and one or the other of its inclines i' t2 on the rear arm engages with the adjacent shifting arm and turns the same, together with the rock-shaft and printing-segment, until the shifting arm engages with the notch of the key-lever. When the shifting arm engages with the notch of the key-lever, the upward movement of the rear arm of the key-lever is arrested and the type-segmentis locked in position while the particular type on its face which is at the printing-point at this time is producing an impression on the paper. Upon releasing the key-lever its rear arm is disengaged from the shifting arm and leaves the type-segment stand with that type at the printing-point which made the lastimpression. This permits of printing the same letter successively without shifting the printing-segment, thereby reducing the wear on the machine.

The key-levers on one side of the rock-shaft engage with one of the shifting arms and the key-levers on the opposite side of the rockshaft engage with the other shifting arm. The notches in the several key-levers are all arranged at different distances from the fulcra of the key-levers and the angle of the inclines extending from each notch is greater or less. This causes each key-lever to shift the printing-segment to a point different from that to which it can be shifted by any other key-lever. The extent of the inclines leading in opposite directions from the notches of the different key-levers is such that upon depressing any one of the key-levers one of its inclines will come into engagement with a shifting arm and turn the same until it reaches the notch in the lever.

After the printing-segment has been turned and carried the desired letter to the printingpoint the impression of this letter is made on the front side of the paper by the following mechanism:

J represents an impression-hammer whereby the paper is pressed against the ink-ribbon and the latter is pressed against the type of the printing-segment. rlhis hammer is arranged above the rear feed-roller in line with the printing-point and back of the path of the paper.

K represents a rock-arm supporting the hammer and consisting of an elastic upper section k', which carries the hammer at its upper end and curves backwardly around the paper-holder and a lower rigid section 7a2, which has secured at its upper end the lower end of the elastic section and is pivoted at its lower end to central longitudinal bars 7o of the main frame. The forward movement of the lower section of the rock-arm is regulated by an adjusting-screw Z, which is arranged in a forwardly-projecting lug Z on the lower section of therock-arm and which bears against a stop Z2, formed on the lower portion of the frame. The rock-arm is yieldingly held in its forward position by a spring l", secured at its front end to a depending lug l4 on the lower rock-arm section and adjustably connected with the frame by ascrew-stem l5, connected with the rear end of the spring and passing through the rear portion of the frame, and a screw-nut l, engaging with said screwstem and bearing against the rear side of the frame. The rock-arm K is arranged centrally in rear of the key-levers and the front side of its lower section is provided with an inclined or cam face m, which extends upwardly and forwardly from its pivot, and an abrupt face m', which extends rearwardly from the upperend of the cam-face. N represents a universal cross-bar which rests upon lugs n, projecting rearwardly from the keylevers and which is connected at its ends with the rear ends of rock-arms '1i/a. The latter are arranged lengthwise adjacent to the outermost key-levers and are pivoted at their front ends on the transverse rod h, on which the key-levers are pivoted. The universal bar is normally held in a depressed position by springs n2, connecting its su pporting-arms with the cross-bar h3.

O is a horizontal trip-arm which is pivoted with its front end to the rear side of the universal bar and which is provided at its rear end with a trip-roller o', bearing against the cam-face of the hammer rock-arm. The triparm is free to swing upwardly, but its downward movement is limited by a depending stop or lug o2, arranged on the trip-arm adjacent to its pivot and bearing against the rear side of the universal bar. The trip-arm is yieldingly held in a depressed position by a spring 03, secured to the universal bar and bearing against the upper side of the trip-arm.

Upon depressing the front arm of any one of the key-levers the lug n on its rear arm raises the universal bar and the roller on the trip-arm rides upwardly over the cam-face of the hammer rock-arm. During'the upward movement of the trip-roller over the cam-face the hammer rock-arm is deflected or swung rearwardly, and the instant the trip-roller clears the cam-face the hammer rock-arm is quickly swung forwardly, this forward movement of the rock-arm being permitted by the abrupt face 'm' of the hammer rock-arm. During the subsequent downward movement of the trip-arm t engages with the abrupt face of the hammer rook-arm and is deiiected and held in a deflected position until it has reached the end of its downward movement and engages with the lowest portion of the cam-face, when it again assumes its normal straightened position preparatory to deflecting the hammer rock-arm upon operating the neXt key-lever. In the normal forward position of the hammer it does not press against the rear side of the paper; but when the hammer-arm is retracted rearwardly and then released the upper and lower sections of the arm turn together until the lower section is arrested by the stop, after which the hammer, owing to its momentum, bends the upper section and delivers a blow against the back side of the paper, whereby the same and the inkribbon are pressed against the type on the printing-segment andv an impressionis produced on the front side of the paper. After the hammer has delivered a blow it springs backwardly into its normal position.

The relative movement of the parts is so timed that the retracted hammer-arm is lreleased for producing the impression the instant the notch of a key-lever engages with one of the shifting arms and the printingsegment has carried the proper type to the printing-point.

When two or more key-levers are depressed at-the same time, not one of them can be turned its full extent owing to the notches in the levers being out of register and preventing the shifting armfrom engaging with any one of the notches, thereby rendering it impossible to trip the hammer and produce an impression.

In the construction of the machine shown in Figs. l and 2 the impression is produced by the hammer swinging in an are. If desired, the hammer mechanism may be so organized that the hammer has a rectilinear movement toward and from the paper, as shown in Fig. 4. In this iigureP represents a reciprocating stem or horizontal rod which is supported in front and rear stationary guides p p and which is provided at its front end with a main hammer Q, adapted to bear against the back of the paper. The main hammer is yieldingly held in a retracted po-` sition by means of a spring q, which bears with its ends against the front guide and a stop or shoulder q on the stem. The upper elastic section of the hammerfarm is provided with an auxiliary hammer R, which is adapted to strike the rear end of the stem and move the main hammer against the paper and which in its normal position is out of engagement with said stem.V

I claim as my inventionl. The combination with a vertical rock shaft provided with a type-segment and with a horizontal shifting arm, of key-levers provided with inclines which are adapted to engage with said arm and turn the same in a horizontal plane `for carrying different type on the segment to the printing-point, substantially as set forth.

2. The combination with the vertical rockshaft provided with a type-segment and two shifting arms on opposite sides of its center, of key-levers arranged on opposite sides of the shaft and provided adjacent to said arms with notches and inclines leading to opposite sides of thev notches, the notch and inclines of each lever being out of register with the notches and inclines of the other levers and adapted to engage with said shifting arms, substantially as set forth.

3. The combination with the typecarrier,of key-levers provided with dierential notches and'inclines leading to said notches, a shifting arm 'connected with said carrier and adapted to be engaged by said inclines and notches, an impression-hammer having a movement toward and from the type-carrier, a rock-arm provided with a cam-face and an abrupt face, a movable cross-bar engaging with the key-levers, a trip-arm engaging with said cam-face and pivoted on said cross-bar, a spring whereby the trip-arm is yieldingly held against movement in o ne direction, and a stop whereby the trip-arm is positively held against movement in the opposite direction,

Isubstantially as set forth.

WILLIAM H. sLooUM.

Witnesses: THEO. L. PoPP, KATHRYN ELMORE.

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